What's the 'generate grease pencil' command in render view?
To create an image in the image editor and create a grease pencil object with it.
In the image editor create a new image (Image&gt;New).
Change to Draw Mode.
Create your drawing.
Select Image&gt;Generate Grease Pencil Object.
Switch to the 3d viewport, the grease pencil object should appear. The grease pencil object will be created with the lower left corner at the place where the 3d cursor is.